查询词典 covariance

When the Hamming distance was uncertain of its decision due to the influence of eyelids, eyelashes and iris deformations, mean and variance were extracted from coefficients of multiwavelets transform, and Euclidean distance of covariance reciprocal with weight value was designed as the classifier.

对因为睫毛、眼睑、虹膜变形等影响而不能有效识别的虹膜图像，再对多小波变换系数提取均值和方差作为全局特征，用方差倒数加权欧氏距离进行识别。

This paper studies the application of smart antennas to the downlink in the FDD-CDMA. We estimate thedownlink channel covariance matrix and the relative interference to users of the other cells by using the uplink data., and present a method for downlink beamforming , i. e., we obtain the minimum relative interference to other users while the constanttransmitting power is guaranteed.

本文研究了智能天线在FDD-CDMA中的下行链路的应用，利用上行链路接收数据，估计了下行链路的信道相关矩阵和对其它小区用户的相对干扰总量，给出下行链路的波束形成方法，即在保证一定的有效发送功率的同时，使得对其他小区的用户干扰最小。

We choose an optimal model for functional mapping via comparing various combinations of submodels for mean vectors of QTL genotypes and residual covariance matrix according to statistical power of detecting QTL.

根据QTL的统计检测效率，通过比较关于QTL基因型的期望均值向量和剩余误差的协方差矩阵的子模型的不同组合，来筛选优化的功能定位模型。

Modeling time-dependent expected mean vectors of QTL genotypes and the structure of the within-subject residual covariance matrix are the essence for functional mapping QTL of dynamic traits.

拟合与时间相关的QTL基因型的期望均值向量和剩余误差的协方差矩阵是动态性状功能定位的核心内容。

Besides univariate AR model, this dissertation finally presented our study on a parameter called the local spatiotemporal synchronization index, mainly based on residual covariance matrix of a multivariate autoregressive model.

除了单变数的自回归模型外，在这论文的最后，我们也提出了残余共变异矩阵，系根据多变数的自回归模型所发展出来的一个评估脑电波时空一致性的指标：LSTS（local spatiotemporal synchronization）指标。

A filtered transformation and a stochastic control Lyapunov design method are applied to Marino-Tomei systems driven by Wiener noises of unknown covariance. A parameter adaptive law and a control law are obtained to ensure that the closed-up systems are noise-to-state stable and the tracking error can converge to a small residual set around the origin in the sense of mean quartic value in average.

通过滤波变换，采用随机控制Lyapunov设计方法，对于受方差未知的Wiener噪声干扰的Marino-Tomei非线性系统，给出了参数自适应律和控制律，使得闭环系统成为噪声--状态稳定的，并且跟踪误差的4次均方值在时间平均意义下收敛到一个足够小的区域内。

Through the retroversion observing and research of 305 chronic obstructive pulmonary disease inpatients and the covariance analysis, the result indicates: Clinical familiar case types were deficiency of both the spleen and lung , deficiency of both the lung and kidney, and deficiency of all the three.

我们通过对305例慢性阻塞性肺疾病住院病人的分型、临床症状、体征及理化检查指标的观察，认为慢性阻塞性肺系病证以本虚为主要表现，急性发作期挟实，以本虚标实为主。

Through the retroversion observing and research of 305 Pulmonary Systerm disease inpatients and the covariance analysis, the result indicates: Clinical familiar case types were Deficiency of both the spleen and lung , Deficiency of both the lung and kidney, and Deficiency of all the three.

我们通过对305例肺系疾病住院病人的分型、临床症状、体征及理化检查指标的观察，认为慢性肺系病证以本虚为主要表现，急性发作期挟实，以本虚标实为主。

The error is described by weighted average variance-covariance of root mean square error in curve normal direction, and error in the direction with maximum error respectively.

曲线上任意点的误差由端点及距离误差传播导出的误差之加权平均值的协方差表示。

Nevertheless, in many practical applications such as in low sample support or when the signal statistics are rapidly time-varying, we may not have enough sample to form the sample covariance matrix.

然而，常规的子空间估计方法由于涉及到阵列协方差矩阵的估计及其特征值分解，从而需要较高的计算复杂度。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。